Power feeds for edge planers



Aug 29, 1961 R. G. PATTERSON 2,998,040

POWER FEEDS FOR EDGE PLANERS Filed May l, 1959 2 Sheets-Sheet 1 H* ii lINVENTOR. R. G. PATTERSON ATTORLNEYS.

Aug. 29, 1961 R. G. PATTERSON 2,998,040

POWER FEEDS FOR EDGE PLANERS Filed May 1, 1959 2 Sheets-Sheet 2ATTORNEYS.

United States Patent O 2,998,040 POWER FEEDS FOR EDGE PLANERS RobertGlenn Patterson, 32 Chicago St., Planleld, Ill. Filed May 1,1959, Ser.No. 810,373 3 Claims. (Cl. 1'44-247) This yinvention embodiesimprovements on the Edge Planer patented by me on March 5, 1957 underNo. 2,783,796.

In the aforesaid patent la pair of rollers were in pressing engagementwith the edge of the board being planed, in order to keep the boardsteady during its movement through the planer. This movement wasaccomplished by hand, `andl have lfound that this method of feeding theboard is often unsatisfactory. Thus, the hand feed may be uneven,causing the cut -to vary in depth or tex ture; or, the feed may be toofast at times, causing roughness in the surface of the work. Also, thepatented structure employed a backing guide or fence for the work whichrequired the loosening of securing bolts every time the depth oftheguide .had to be adjusted, and the tightening of the bolts when a newsetting of the guide was determined, these operations requiring effortand skill to make sure that the guide was parallel to the path of thework.

One object of the present invention is to impart an additional functionto the pressing rollers by making them power operated.

A further object is to connect the work guide for movement in forward orrearward direction by power means, with a hand control yadded foroperating the guide when only a short movement thereof is required.

Another object is -to include power-transmission controls for operatingconvenience and safety.

A A betterunderstanding of the improvements may be gained by referenceto the accompanying drawings, in VVifllCil` Y ,1`1'IG. y1 is atop planview .ofthe planer, similar to FIG. 2 in the aforesaid patent;

FIG. 2 is a duplication of parts shown in the right-hand lower portionof FIG. 1 after the table of the planer has been removed;

FIG. 3 is a front elevation of a mechanism seen from the line 3 3 ofFIG. 1

FIG. 4 is a side elevation of .the work guide feed as seen from the-line 4 4 of FIG. 3;

FIG. 5 is an enlarged duplication of a roller drive seen in the lefthand portion of FIG. l;

FIG. 6 is an enlarged section of the roller drive, taken on the line 6 6of FIG. 1;

FIG. 7 is a rear view of a work guide control; taken on the section line7 7 of FIG. 4;

FIG. 8 is a side view of the said control enlarged from the showing inthe right-hand portion of FIG. 4;

FIG. 9 (Sheet l) is an enlarged section on the line 9 9 of FIG. 1; and

FIG. 10 is a section on the line 10-10 of FIG. 9.

rIhe basic construction of the planer follows that of the one in mypatent. Thus, specic reference to the accompanying drawings indicatesthe table of the planer at 10, and a fragment of its supportingstructure at 11. 'Ihe motor for operating the cutter 18 is shown at 16,and the blades of the cutter are shown at 19.

The board to be planed is shown at 21, as in the patent, and the backingguide lor fence 25 -for the same is part of an angle rail 26 which isslidable between front and rear over the table 10.

The assemblies of the rollers designed for pressing engagement with theedge of the board 21 are positioned similarly to those in the patent,but their specific nature has been changed. Thus, these rollers aresupported by arms 65 and 66, each arm having a hub 68 (FIG. 6)

2,998,040 PatentedA Aug. 29, 1961 ICC at its outer end and ra pendentweb 69. 'Ihe hub is pivoted on Ia vertical sleeve 71 driven tightly intoa boss 72 depending from the table 10; and the sleeve carries rollerbearings 74 for a vertical shaft 74a which carries a top sprocket 75 atits upper end and a bottom sprocket 76 at its lower end.

The inner end of each arm65 and 66 carries a bearing 80 on which yacap-shaped roller 81 is rotatable. The roller is carried by an uprightshaft 82 which is journaled in the bearing 80 and is headed -at 82a tosupport the roller. The shaft lis reduced `at 82b above the arm 65 forthe keyed mounting of a sprocket 84 which is connected to the sprocket75 by |achain 85. 'Ihe 4roller 81 carried by the arm 65 has a rubberjacket 86. However, the roller 81 carried by the arm 66 is fitted with aplurality of radial pins 88 near the bottom, these projecting in theform of barbs 89, las seen in FIGS. 9v and 10.

Means similar to those in the aforesaid patent are provided for urgingthe rollers 81 against the Work. Such means comprise the plates 50 (FIG.1), secured to the table by screws 51 and forming `bearings for screws53 directed through the Webs 69 of the arms 65 and 66. Each screw 53 hasa head 56 on the outer side of the arm and a washer 56m on the innerside thereof; and the compression spring 60 is coiled around the screwbetween the plate 50 and the web 69, the screw being made fast to theplate by a lock nut 53a. Although the amount of swing of the arms 65 and66 is quite short, as noticed in FIG. l, it is preferable to widen theholes in the Webs 69 through which the screws 53 p-ass as indicated at70 in FIG. 6 to avoid binding of the screws as the arms swing.

It is evident from FIG. 1 that `the board Z1 is fed from right to leftin order to receivey the cut indicated in its frontedge. The machineimparts joint rotation to the shafts 74a in counter-clockwise ldirectionas seen in FIG. 1, so vthat the roller 81 with the barbs 89 imparts apositive feed to the rough edge of the board 21, while the roller 81with the rubber jacket 86 continues the `feed after the edge has beencut with ya finished surface.

The source for operating the work-feeding roller 81 is' la motor 95(FIGURE 2) mounted beneath the ltable and connected to a speed reducer96. 'Ihe output shaft 103 of the latter is vertical, and receives adrive sprocket 105. A loop-shaped chain 106 transmits motion from thesprocket to the roller sprocket 76 with the aid of idler `sprockets 108suitably journaled beneath the table 10 As indicated in FIGS. 7 and 8,the Work guide or fence 25 has tapped bearings 110 near each end for lapair df feed screws 1112. These pass in shaft form 112z (FIG- URES 1 and4) through journals 114 at the front end of the machine to be connectedfor joint rotation by a frontal shaft through the agency of bevel gears116. Brackets 117 fro-m the table 10 carry the journals 114 and journals118 for the frontal shaft, las seen in FIG. 1,

The shaft 115 carries Ka handwheel `119 at one end which is operated incase the work Iguide 25 is to be given a short movement. However, incase the work guide is to be moved a considerable distance, ra powerfeed for the frontal shaft 115 is provided. FIG. 2 shows a belt takeolffrom ya variable speed pulley 126 td a driving pulley 127 on a jackshaft 128 below the table. The pulley 127 is movable by means of a handlever 130 and frame 131 to engage a clutch component 132 on the jackshaft 128 with Ia clutch component 133 on a cofmpanion jack shaft 135. Apulley 136 on the latter transmits a belt drive 138 to a pulley 139 onthe frontal shaft 115. The power drive for the work guide can thus beengaged by the shifting of the hand lever 130. The jack shafts 128 and135 are carried by frontal frame journals 140. The pulley 126 receivesmotion from a companion 3 variable speed pulley 142 pulley 142 isoperated by a motor 144, these units being suitably secured in the frameof the planer.

, As in the patented structure, "a device is provided -for locking theWork guident )any point in its adjustment. Thus, FIGS. 7 and 8 show thatthe base l26 of the work guide 25 carries journals 14S near its endslfor a long shaft 147. The latter carries eccentrics 148, one of themreceiving a hand'lever 150 headed by a fball 15,1; and the eccentricsIare pinned through the shaft as shown at 149. They ride on wear pads153 secured on the work guide base 12,6 by screws 154. The journals. 145depend in the form of vertical slides 145e, which operate in the screwbearings 110 and receive bottom blocks 156 on their inner sides securedVby screwsV 157. The Iblolcks are positioned just below side flanges 160depending from the table 10. When the hand lever-,is in the verticalposition, the eccentrics are low atthe bottom and maintain the slideblocks 156 clear of the table flanges 160, so that the work guide isfree to be moved'forth and back. However, when the hand lever is swungldown to the position shown in FIG. V8 .after a desired placement of theWork guide has been made, the eccentrics are high 'at the bottom andraise the blocks 156 into engagement with the table anges 160. The workguide is now locked against movement.

vIt will now be apparent that the improvements described above .addpower feed means for the wo'rk and the work guide. The progress oftheWork is thus rendered uniform and the edge cut evengfand the powereedfor the workguide saves time when the work guide is to be moved toaconsiderable extent. While theseimprovements make for greater etliciencyin the operation and handling of the planer, they are quite simple inconstruction and should serve over a long period without appreciableattention or repair.

Iclaim:

l. AIn anv edge planer having a table, the combination withV asubstantially vertical guide backing the work, and asubstantiallyvertical-.axised cutter `above the table and applied Yto thefront oftheY work; of a roller applied to the front of work 'at theV feedingsideV of the cutter for engaging the work with the guide and feeding theWork by way of ya belt 143; yand the t 4 toward the cutter, 'a secondroller applied to the front odi the work at the side departing from thecuttertfor engaging the work with the guide, pressure means directed tothe rollers from the iront, sprockets carried by the rollers, drivesprockets located outwardly from the rollers, chain drives connectingVthe drive sprockets' withV the' roller sprockets, and power drive meansfor said drive sprockets,- said rollers and sprockets being locatedabove the table, and said drive means being located fbeneath the same.

2. The structure of claim l, said power drive means compri-sing shaftsfor the drive sprockets with lower end portions beneath the table,bottom sprockets carried by said lower end portions, -a power unit, anda looped chain' operated by theY latter and trained along the outersides ofthe bottom sprockets.

3. The structure of claim l, said power drive means' comprising shaftsfor the drive sprockets with lower end portions beneath the table,bottom sprockets carried byv said lower end portions, -a power unit, lalooped chain' operatedY yby the latter and trained along the outersides" of the bottom sprockets, xand front `and rear idler sprockets"appliedV to corresponding runs of the looped chain at' pointsintermediate the bottom sprockets.

"References Cited in the" le of this patent Y UNITED STATES PATENTS266,517 Remus Oct. 24, 1882 690,456 Ording Jan. 7, 1902 940,016 HickNov. 16, 1909 1,174,777 Tomlinson Mar. 7, 1916 1,540,703 Nelson Iune'Z,1925l 2,397,490 Kenney Apr. 2, 1946 2,615,483 King Oct. 28, 19522,783,796' Patterson Mar. 5, 1957 2,829,683 Skinner et al Apr. 8, 1958 YFOREIGN PATENTS 65,115 Norway Aug. 3, 1942 90,820 Sweden Nov. 16, 1937 y371,489v Germany Mar. 16, 1923 Great Britain Mar. 2.4, 1936-

